Wrench.



W. HORSTMAN.

WRENCH.

APPLIOATION FILED JUNE 2, 1910.

Patented MarJ28, 1911.

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ATTORNEY TIIT CHARLES W. HORSTIVIAN, OF IVIUNCIE, INDIANA.

WRENCH.

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Specification of Letters Patent.

Patented Mar. 28, 19111.

Application filed June 2, 1910. Serial No. 564,544.

To all whom it may concern:

Be it known that I, CHARLES W. HoRs'r- MAN, a citizen of the United States, and residing at Muncie, in the county of Delaware and State of Indiana, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to improvements in wrenches of that type or form in which a toothed disk-shaped jaw-piece having an opening therein to fit the nut or bolt to be turned, is carried pivotally at the end of the handle or body-portion of the wrench,

and by suitable means such as a pawl or ratchet the handle may be caused to be locked into engagement with the jaw-piece at different relative positions thereto.

The objects of this invention are to provide a wrench of the kind described which will be rugged and durable and easy to manipulate and which will be not liable to become deranged or get out of repair.

Further purposes of the invention are to so improve the construction of such a wrench that while retaining the features of durability and strength it will be very economical of manufacture.

To these ends my invention consists of the new construction, combination and arrangement of parts described in this specification, defined in the appended claims, and illustrated in the accompanying drawings.

Similar letters of reference refer to corresponding parts as shown in the drawings wherein Figure 1 is a view of my improved wrench, the handle thereof being shown in section. In Fig. 2 is shown the handle, the jaw-piece having been removed. F ig, 3 is a view of the jaw-piece removed.

In bringing this type of wrench to the state of perfection claimed for it herein, the use of the pawl and pivot of the usual construction has been avoided and I employ a detent and an integrally formed journal or cross pin for the wrench head. The construction and adaptation of such parts in combination with the wrench head being such that the practicability of the wrench is materially increased. The head end of the handle A is formed so as to provide the opening A the walls A of which are joined by the neck A which is circular in cross sec tion as shown in Fig. l. A bore A provided in the body of the handle extends in the direction and to the depth substantially as shown in Fig, l and opening out from the side of said bore is the aperture A In the said bore is disposed a detent B composed of a plain cylindrical metal piece, and which will be urged outwardly by a coil spring C between the end of the bore and the inner end of the detent. Escapement of the detent is prevented by a stub B carried by same and which may move in the aperture A when the detent is depressed. Another purpose fulfilled by this stud will be presently referred to.

D designates the jaw-piece. This jawpiece is made of metal of suitable hardness and temper and its peripheral edge has a succession of transverse depressions or grooves which form the teeth D By having the angular recess D therein this jawpiece is capable of having proper hold on the bolt head or nut to be moved. It is intended that there shall be a number of these jaw-pieces to accompany the handle, the same having recesses of different dimensions. From the back of said recess extends an opening which terminates in a half-bore I) that is concentric to and which the aforesaid neck A To insert the jawpiece into operative position it isdisposed with one of its jaws in the opening A the half bore D being in bearing engagement with the neck A It is then moved in the direction indicated by the arrow G the teeth D readily passing the detent B.

In using the wrench it is disposed with the jaw-piece to engage the nut, the handle is then moved in the direction indicated by the arrow H as far as the limited space in which the wrench is being operated, will al low, the detent readily passing the teeth D With a reverse movement of the handle the detent immediately engages a tooth D and the jaw-piece will move with the handle, The strain will be transmitted directly from the handle to the jaw piece through the detent and heavy pressure applied to the handle will not derange any part of the device, there being no pins, rivets, bolts, or studs to be broken or to become bent or strained out of alinement. The detent may be moved out of engagement independently of the movement of the handle, by moving the stud B There being no machine work on this wrench except the drilling of the bore A it is capable of being manufactured very will engage cheaply, and is practicable in larger as. well 7 as the smaller sizes.

What I claim as my invention and desire to secure by Letters Patent, is,

1. In a wrench, a handle having a slotted head, an integral pin crossing the same and forming a journal, a disk shaped jaw piece having a peripheral socket, there being an offset in said socket forming a journal'to engage the said pin, yieldable means carried by the handle to hold the jaw piece in engagement with the pin and against rotative movement thereon.

2. In a wrench, a handle having a slotted head, an integral pin crossing the same and forming a ournal, a disk shaped aw plece having a peripheral socket there being an offset in said socket forming a journal to Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of latents Washington, D. C. l 

